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Finding the Fourth Proportional to 111.64, 167.30 and 60.24

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Solution

The fourth proportional to 111.64, 167.30 and 60.24 is: 90.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.64 : 167.30 = 60.24 : x
  2. Step 2: Convert to fraction form
    111.64/167.30 = 60.24/x
  3. Step 3: Cross multiply
    111.64x = 167.30 × 60.24
  4. Step 4: Simplify right side
    111.64x = 10,078.15
  5. Step 5: Solve for x
    x = 10,078.15/111.64
  6. Step 6: Final answer
    x = 90.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.